Stupid way to say "most awesome" which is still a stupid thing to say. Just say "pretty awesome," alright?
People often mistake "stupid" with "cute" and/or "goofy." Don't be fooled. It is actually stupid.

Girl: OH MY GOD THAT IS THE AWESOMEST PINK FLOWERY BUBBLEGUM BOUNCY CAR THAT I EVER SAW!
*boom*
Bystander: Turns out it was a car bomb. That was pretty awesome.